Home / 872,820.80-1,309,628.64-423,298.88

Finding the Fourth Proportional to 872,820.80, 1,309,628.64 and 423,298.88

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Solution

The fourth proportional to 872,820.80, 1,309,628.64 and 423,298.88 is: 635,141.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,820.80 : 1,309,628.64 = 423,298.88 : x
  2. Step 2: Convert to fraction form
    872,820.80/1,309,628.64 = 423,298.88/x
  3. Step 3: Cross multiply
    872,820.80x = 1,309,628.64 × 423,298.88
  4. Step 4: Simplify right side
    872,820.80x = 554,364,336,527.92
  5. Step 5: Solve for x
    x = 554,364,336,527.92/872,820.80
  6. Step 6: Final answer
    x = 635,141.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.